What is a condition where the nervous system causes a muscle contraction or shortening of muscle fibers? A. Muscular response
B. Motor response
C. Muscular movement
D. Motor movement

What kind of action is a cause of air pollution

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material

Gene expression is the activation of a gent that results in a question 1 options: protein dna mitochondria